✦ LIBER ✦

PERSONAL TELEPHONE ELECTROCARDIOGRAM TRANSMITTER

✍ Scribed by PETER, T

Book ID: 122456735
Publisher: The Lancet
Year: 1973
Tongue: English
Weight: 372 KB
Volume: 302
Category: Article
ISSN: 0140-6736
DOI: 10.1016/S0140-6736(73)90932-X

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

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Trouvg has invented a cylindrical microphone, which resembles a small dark-lantern, with a carbon crayon substituted for the candle. When placed in the middle of a room, it reveals all secrets. It transmits the voice admirably to a receiving telephone, even when the speaker stands 25 metres (82 ft.)

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